[LyX/master] Remove hebrew letter document class

[Richard Kimberly Heck]

On 6/11/24 14:39, Udicoudco wrote:
> On Tue, Jun 11, 2024 at 9:37 PM Udicoudco <udifoglle at gmail.com> wrote:
>> How can it break old documents?
>> Other than custom user layouts,
>> which requires this one, I can't think
>> of a problem.
> And in such a rare case they can simply input
> the regular letter layout instead (which gives
> the correct alignment in the GUI anyway).

It's more a matter of policy. Our goal is that any document created with 
LyX can be opened in any later version, and compiled to produce the same 
output. Of course, we can't always do that, but we try. In this case, 
removing this file will prevent a document that uses it from loading 
properly, let alone compiling. So we keep it and mark it obsolete.

Riki